Mr. Grassley is a 65 year old retired teacher from Ithaca, NY. 10 years ago, he presented with a suspicious digital rectal examination and an elevated PSA level of 9 ng/ml. A biopsy of the prostate revealed no abnormalities. The year, he presented again with a PSA level of 12 ng/ml. Again, a biopsy was negative. Why is the prostate-specific antigen (PSA) not considered an ideal tumor cell marker? Is there a level at which cancer would be indicated?

not meh

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i hope a lot

do you like anime

what is your favorite show

explanation:

come on give me brainliest

answer:

thousands of years before the arrival of the british, australia was settled by the indigenous people of australia called the aborigines. this timeline begins when the europeans first arrived. 1606 - the first european to land at australia is dutch explorer captain willem janszoon.

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Selenium, zinc, copper, calcium, phosphorus, iodine, iron, manganese, and sodium. A mistake many novice farmers make is feeding their herds large amounts of grain-based goat feeds. Hope that helps!!!